[Users] Unrecognized static network settings

[Paul]

Since it's gmail it could be that you haven't configured your account
properly on the gmail side.

In your browser, on the gmail site, you need to set an option that is
called something like 'allow unsafe apps'.

What this options actually means is 'allow apps that don't use oAuth2
authentication'. Those apps could be using SSL, so there's nothing
inherently 'unsafe' about them.

HTH

Paul